His dogs were in the passenger seat of his truck, as a suitcase and several trash bags covered the bed.

The on/off couple are believed to have called time on their four-year relationship, but they are reportedly allowed to date other people, and it is said the On The Road actress is finding it tough to deal with.

A source told HollywoodLife.com: ‘They are basically allowed to date other people and Kristen is super sad over the whole thing.

‘She has absolutely no desire to date anyone and the thought of Rob possibly seeing other people has made her sick to her stomach. She’s depressed and rightly so.

‘Her good friends have been hanging out with her at her house giving her support. This is a tough time for both of them. But Kristen seems to be taking the split the hardest.’

Over flowing: Robert’s truck could only just about hold all of his things

The Twilight Saga stars first broke up for two months last summer after the actress’ fling with director Rupert Sanders, and it is said the affair could be the reason for this recent break.

An insider told Us Weekly: ‘All this stuff came up. A lot of issues came up. [They argued] about the cheating, about how selfish she always is, about how moody she always is.’

Better times: Robert Pattinson and Kristen Stewart have reportedly split after almost four years together

Meanwhile, Robert was looking ‘miserable’ on Sunday when he was reportedly spotted moving his belongings out of Kristen’s home.

Speaking to Life & Style magazine, a source revealed: ‘[He was in there] for maybe 30 minutes. When he came out, the back of the truck was loaded with stuff. Suitcases, a bike, trash bags full of his things.

‘He] looked miserable … He looked like a man who had just been kicked out.’

However, just like the last time, the pair may not be over for good.

Sources insisted to the magazine it may just be a temporary split for the Twilight Saga co-stars.

Last Monday, it appeared Kristen had left her LA home that she shares(d) with the English actor.

Despite it being Robert’s 27th birthday, Kristen stayed at a friend’s house just down the road from her own home.

Not the first time: The couple split up briefly in December after Kristen’s fling with director Rupert Sanders, pictured here at the premiere of their film Snow White And The Huntsman

She was seen driving with a friend around the area – and even appeared to be tearing up at one point.

The Twilight co-stars were expected to attend Cannes Film Festival in France together this week, however neither star has been photographed at the festival.

Speculation over their rocky romance had subsided lately, as the pair have been putting on a show of solidarity, but now sources claim they have chosen to go their separate ways even though Robert had put Kristen’s affair behind them.

Robert initially struggled to cope with Kristen’s ‘momentary indiscretion’ with friends revealing their relationship was strained for months after the fling.

Following the affair, which was caught on film by a cameraman, the 23-year-old issued a public apology for the hurt she had caused and finally acknowledged publicly her relationship with her co-star.

The director did not fare as well.

His wife model Liberty Ross – with whom he has two children – filed for divorce.

He was also dumped as director of Snow White And The Huntsman sequel – as during filming of the original the pair begun their affair.

Open sesame: The movie star typed in a pin code to open the gates to his home

Down in the dumps: Kristen looked miserable on Monday night, as she went to a friend’s house instead of spending time with boyfriend Robert on his birthday